The lead piece When immersed into a measuring cylinder, the water level rises from 20ml mark to 30ml mark. Find the volume of the lead piece.​

Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e

Which one of the following research methods can show cause and effect

In the first law of thermodynamics, triangle e=q-w, what does q stand for